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/*
* Copyright 2016 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package scouter.agent.batch.asm;
import scouter.org.objectweb.asm.ClassVisitor;
import scouter.org.objectweb.asm.MethodVisitor;
import scouter.org.objectweb.asm.Opcodes;
import scouter.org.objectweb.asm.Type;
import scouter.agent.ClassDesc;
import scouter.agent.asm.IASM;
import scouter.agent.asm.util.HookingSet;
import scouter.agent.batch.Configure;
import scouter.agent.batch.Logger;
import scouter.agent.batch.asm.jdbc.PsExecuteMV;
import scouter.agent.batch.asm.jdbc.PsInitMV;
import scouter.agent.batch.asm.jdbc.StExecuteMV;
import scouter.agent.batch.trace.TraceSQL;
import java.util.HashSet;
/**
* BCI for a JDBC PreparedStatement
* @author @author Paul S.J. Kim([email protected])
* @author Gun Lee ([email protected])
* @author Munsoo Kwon ([email protected])
*/
public class JDBCPreparedStatementASM implements IASM, Opcodes {
public final HashSet target = HookingSet.getHookingClassSet(Configure.getInstance().hook_jdbc_pstmt_classes);
public final HashSet noField = new HashSet();
public JDBCPreparedStatementASM() {
target.add("org/mariadb/jdbc/AbstractMariaDbPrepareStatement");
target.add("org/mariadb/jdbc/MariaDbClientPreparedStatement");
target.add("org/mariadb/jdbc/MariaDbServerPreparedStatement");
target.add("org/mariadb/jdbc/MySQLPreparedStatement");
target.add("oracle/jdbc/driver/OraclePreparedStatement");
target.add("org/postgresql/jdbc2/AbstractJdbc2Statement");
target.add("org/apache/derby/client/am/PreparedStatement");
target.add("net/sourceforge/jtds/jdbc/JtdsPreparedStatement");
target.add("jdbc/FakePreparedStatement");
target.add("jdbc/FakePreparedStatement2");
target.add("com/microsoft/sqlserver/jdbc/SQLServerPreparedStatement");
target.add("org/hsqldb/jdbc/JDBCPreparedStatement");
target.add("com/mysql/jdbc/ServerPreparedStatement");
target.add("com/mysql/jdbc/PreparedStatement");
target.add("cubrid/jdbc/driver/CUBRIDPreparedStatement");
target.add("com/tmax/tibero/jdbc/TbPreparedStatement"); //tibero5
target.add("com/tmax/tibero/jdbc/driver/TbPreparedStatement"); //tibero6
// @skyworker - MySQL ServerPreparedStatement는 특별히 필드를 추가하지 않음
noField.add("com/mysql/jdbc/ServerPreparedStatement");
noField.add("jdbc/FakePreparedStatement2");
noField.add("org/mariadb/jdbc/MariaDbClientPreparedStatement");
noField.add("org/mariadb/jdbc/MariaDbServerPreparedStatement");
}
public ClassVisitor transform(ClassVisitor cv, String className, ClassDesc classDesc) {
if (Configure.getInstance().sql_enabled == false) {
return cv;
}
if (target.contains(className) == false) {
return cv;
}
Logger.println("A106", "jdbc pstmt found: " + className);
return new PreparedStatementCV(cv, noField);
}
}
class PreparedStatementCV extends ClassVisitor implements Opcodes {
HashSet noField;
private String owner;
public PreparedStatementCV(ClassVisitor cv, HashSet noField) {
super(ASM5, cv);
this.noField = noField;
}
@Override
public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
super.visit(version, access, name, signature, superName, interfaces);
this.owner = name;
if (noField.contains(name) == false) {
// add trace fields
super.visitField(ACC_PUBLIC, TraceSQL.CURRENT_TRACESQL_FIELD, Type.getDescriptor(TraceSQL.class), null, null)
.visitEnd();
}
}
@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
MethodVisitor mv = super.visitMethod(access, name, desc, signature, exceptions);
if ("".equals(name)) {
return new PsInitMV(access, desc, mv, owner);
} else {
if (PsExecuteMV.isTarget(name)) {
if (desc.startsWith("()")) {
return new PsExecuteMV(access, desc, mv, owner, name);
} else if (desc.startsWith("(Ljava/lang/String;)")) {
return new StExecuteMV(access, desc, mv, owner, name);
}
}
}
return mv;
}
}
